text: import Vue from 'vue';
  import HelloWorld from '@/components/HelloWorld';
  
  describe('HelloWorld.vue', () => {
      it('should render correct contents', () => {
          const Constructor = Vue.extend(HelloWorld);
          const vm = new Constructor().$mount();
          expect(vm.$el.querySelector('.hello h1').textContent)
          .toEqual('Welcome to Your Vue.js App');
      });
  });
  